3. ages in 2005, 24.8% of all americans
were under 18 years old. rhonda
conducts a survey of the ages of
students in eleventh grade at her school.
on november 1, she finds the average
age is 200 months. she also finds that
two-thirds of the students are within
6 months of the average age. write and
solve an equation to determine the age
limits for this group of students. how
many months will it be until the first of
these students turn 18?